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Renasant Corporation (Parent Company Only) Condensed Financial Information - Statements of Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income |  |  |  |  |  |  |  |  |  |  |
Other dividends |  |  |  |  |  |  |  |  | $ 3,076 | $ 2,314 | $ 459
Total income | $ 36,374 | $ 38,053 | $ 35,581 | $ 33,953 | $ 32,441 | $ 33,413 | $ 34,265 | $ 32,021 | 143,961 | 132,140 | 137,415
Expenses | 21,648 | 18,356 | 14,185 | 11,140 | 11,325 | 10,678 | 7,976 | 7,874 | 65,329 | 37,853 | 28,147
Income before income tax benefit and equity in undistributed net income of bank subsidiary | 57,518 | 40,496 | 47,134 | 43,499 | 46,745 | 40,620 | 37,277 | 35,227 | 188,647 | 159,869 | 135,777
Income tax benefit | 13,098 | 8,532 | 10,424 | 9,673 | 30,234 | 14,199 | 11,993 | 11,255 | 41,727 | 67,681 | 44,847
Net income | $ 44,420 | $ 31,964 | $ 36,710 | $ 33,826 | $ 16,511 | $ 26,421 | $ 25,284 | $ 23,972 | 146,920 | 92,188 | 90,930
Renasant Corporation |  |  |  |  |  |  |  |  |  |  |
Income |  |  |  |  |  |  |  |  |  |  |
Dividends from bank subsidiary |  |  |  |  |  |  |  |  | 53,381 | 34,416 | 29,733
Interest income from bank subsidiary |  |  |  |  |  |  |  |  | 8 | 8 | 8
Other dividends |  |  |  |  |  |  |  |  | 137 | 94 | 469
Other income |  |  |  |  |  |  |  |  | 121 | 588 | 1,275
Total income |  |  |  |  |  |  |  |  | 53,647 | 35,106 | 31,485
Expenses |  |  |  |  |  |  |  |  | 13,869 | 12,649 | 9,036
Income before income tax benefit and equity in undistributed net income of bank subsidiary |  |  |  |  |  |  |  |  | 39,778 | 22,457 | 22,449
Income tax benefit |  |  |  |  |  |  |  |  | (3,523) | (3,761) | (2,890)
Equity in undistributed net income of bank subsidiary |  |  |  |  |  |  |  |  | 103,619 | 65,970 | 65,591
Net income |  |  |  |  |  |  |  |  | $ 146,920 | $ 92,188 | $ 90,930

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